The leading web server software on the the Internet. Apache is an open source project.

The Apache Web Server answers requests from browsers, retrieves a requested file or executes a CGI script, and returns the document or script results.

A public-domain Web server developed by a loosely-knit group of programmers. The first version of Apache, based on the NCSA httpd Web server, was developed in 1995. Because it was developed from existing NCSA code plus various patches, it was called a patchy server - hence the name Apache Server. As a result of its sophisticated features, excellent performance, and low price (it's free), Apache has became the world's most popular Web server. By some estimates, it is used to host more than 50% of all Web sites in the world. Core development of the Apache Web server is performed by a group of about 20 volunteer programmers, called the Apache Group. However, because the source code is freely available, anyone can adapt the server for specific needs, and there is a large public library of Apache add-ons. In many respects, development of Apache is similar to development of the Linux operating system.

A freely available UNIX-based Web server. It is currently the most commonly used server on Internet connected sites. HP's implementation of the Apache Web Server is called the Secure Web Server for Tru64 UNIX.

Apache is web server software that runs on the server and makes it possible for people to view HTML pages.

Often referred to as simply Apache, a public-domain open source Web server developed by a loosely-knit group of programmers. The first version of Apache, based on the NCSA httpd Web server, was developed in 1995. Core development of the Apache Web server is performed by a group of about 20 volunteer programmers, called the Apache Group. However, because the source code is freely available, anyone can adapt the server for specific needs, and there is a large public library of Apache add-ons. In many respects, development of Apache is similar to development of the Linux operating system. The original version of Apache was written for UNIX, but there are now versions that run under OS/2, Windows and other platforms. The name is a tribute to the Native American Apache Indian tribe, a tribe well known for its endurance and skill in warfare. A common misunderstanding is that it was called Apache because it was developed from existing NCSA code plus various patches, hence the name a patchy server, or Apache server

The web server software that is most used on the internet today.